Finding the Third Proportional to 10,144,644 and 20,643,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,144,644 : 20,643,580.50 = 20,643,580.50 : x
2. Step 2: Convert to fraction form
   10,144,644/20,643,580.50 = 20,643,580.50/x
3. Step 3: Cross multiply
   10,144,644x = 20,643,580.50 × 20,643,580.50
4. Step 4: Simplify right side
   10,144,644x = 426,157,415,859,980.25
5. Step 5: Solve for x
   x = 426,157,415,859,980.25/10,144,644
6. Step 6: Final answer
   x = 42,008,119.34