Finding the Third Proportional to 54,411.75 and 77,061.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,411.75 : 77,061.38 = 77,061.38 : x
2. Step 2: Convert to fraction form
   54,411.75/77,061.38 = 77,061.38/x
3. Step 3: Cross multiply
   54,411.75x = 77,061.38 × 77,061.38
4. Step 4: Simplify right side
   54,411.75x = 5,938,455,516.89
5. Step 5: Solve for x
   x = 5,938,455,516.89/54,411.75
6. Step 6: Final answer
   x = 109,139.21