Finding the Third Proportional to 92,422.50 and 139,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,422.50 : 139,291.50 = 139,291.50 : x
2. Step 2: Convert to fraction form
   92,422.50/139,291.50 = 139,291.50/x
3. Step 3: Cross multiply
   92,422.50x = 139,291.50 × 139,291.50
4. Step 4: Simplify right side
   92,422.50x = 19,402,121,972.25
5. Step 5: Solve for x
   x = 19,402,121,972.25/92,422.50
6. Step 6: Final answer
   x = 209,928.56