Finding the Third Proportional to 54,234 and 81,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,234 : 81,061.50 = 81,061.50 : x
2. Step 2: Convert to fraction form
   54,234/81,061.50 = 81,061.50/x
3. Step 3: Cross multiply
   54,234x = 81,061.50 × 81,061.50
4. Step 4: Simplify right side
   54,234x = 6,570,966,782.25
5. Step 5: Solve for x
   x = 6,570,966,782.25/54,234
6. Step 6: Final answer
   x = 121,159.55