Finding the Third Proportional to 67,021,586 and 144,628,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,021,586 : 144,628,980.50 = 144,628,980.50 : x
2. Step 2: Convert to fraction form
   67,021,586/144,628,980.50 = 144,628,980.50/x
3. Step 3: Cross multiply
   67,021,586x = 144,628,980.50 × 144,628,980.50
4. Step 4: Simplify right side
   67,021,586x = 20,917,542,000,469,380
5. Step 5: Solve for x
   x = 20,917,542,000,469,380/67,021,586
6. Step 6: Final answer
   x = 312,101,566.81