Finding the Third Proportional to 92,418 and 139,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,418 : 139,036.50 = 139,036.50 : x
2. Step 2: Convert to fraction form
   92,418/139,036.50 = 139,036.50/x
3. Step 3: Cross multiply
   92,418x = 139,036.50 × 139,036.50
4. Step 4: Simplify right side
   92,418x = 19,331,148,332.25
5. Step 5: Solve for x
   x = 19,331,148,332.25/92,418
6. Step 6: Final answer
   x = 209,170.81