Finding the Third Proportional to 1,507,128,139.50 and 2,035,623,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507,128,139.50 : 2,035,623,640.50 = 2,035,623,640.50 : x
2. Step 2: Convert to fraction form
   1,507,128,139.50/2,035,623,640.50 = 2,035,623,640.50/x
3. Step 3: Cross multiply
   1,507,128,139.50x = 2,035,623,640.50 × 2,035,623,640.50
4. Step 4: Simplify right side
   1,507,128,139.50x = 4,143,763,605,762,473,472
5. Step 5: Solve for x
   x = 4,143,763,605,762,473,472/1,507,128,139.50
6. Step 6: Final answer
   x = 2,749,443,459.49