Finding the Third Proportional to 42,816,857 and 65,229,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,816,857 : 65,229,064.50 = 65,229,064.50 : x
2. Step 2: Convert to fraction form
   42,816,857/65,229,064.50 = 65,229,064.50/x
3. Step 3: Cross multiply
   42,816,857x = 65,229,064.50 × 65,229,064.50
4. Step 4: Simplify right side
   42,816,857x = 4,254,830,855,545,160
5. Step 5: Solve for x
   x = 4,254,830,855,545,160/42,816,857
6. Step 6: Final answer
   x = 99,372,797.39