Finding the Third Proportional to 42,645,749 and 65,508,545

Step by Step Solution

1. Step 1: Write the proportion equation
   42,645,749 : 65,508,545 = 65,508,545 : x
2. Step 2: Convert to fraction form
   42,645,749/65,508,545 = 65,508,545/x
3. Step 3: Cross multiply
   42,645,749x = 65,508,545 × 65,508,545
4. Step 4: Simplify right side
   42,645,749x = 4,291,369,468,017,025
5. Step 5: Solve for x
   x = 4,291,369,468,017,025/42,645,749
6. Step 6: Final answer
   x = 100,628,305.72