Finding the Third Proportional to 63,665,836.50 and 136,407,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,665,836.50 : 136,407,691.50 = 136,407,691.50 : x
2. Step 2: Convert to fraction form
   63,665,836.50/136,407,691.50 = 136,407,691.50/x
3. Step 3: Cross multiply
   63,665,836.50x = 136,407,691.50 × 136,407,691.50
4. Step 4: Simplify right side
   63,665,836.50x = 18,607,058,300,359,172
5. Step 5: Solve for x
   x = 18,607,058,300,359,172/63,665,836.50
6. Step 6: Final answer
   x = 292,261,271.09