Finding the Third Proportional to 65,420,109 and 142,722,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,420,109 : 142,722,910.50 = 142,722,910.50 : x
2. Step 2: Convert to fraction form
   65,420,109/142,722,910.50 = 142,722,910.50/x
3. Step 3: Cross multiply
   65,420,109x = 142,722,910.50 × 142,722,910.50
4. Step 4: Simplify right side
   65,420,109x = 20,369,829,181,591,012
5. Step 5: Solve for x
   x = 20,369,829,181,591,012/65,420,109
6. Step 6: Final answer
   x = 311,369,539.01