Finding the Third Proportional to 92,280 and 138,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,280 : 138,418.50 = 138,418.50 : x
2. Step 2: Convert to fraction form
   92,280/138,418.50 = 138,418.50/x
3. Step 3: Cross multiply
   92,280x = 138,418.50 × 138,418.50
4. Step 4: Simplify right side
   92,280x = 19,159,681,142.25
5. Step 5: Solve for x
   x = 19,159,681,142.25/92,280
6. Step 6: Final answer
   x = 207,625.50