Finding the Third Proportional to 57,838.50 and 86,276.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,838.50 : 86,276.25 = 86,276.25 : x
2. Step 2: Convert to fraction form
   57,838.50/86,276.25 = 86,276.25/x
3. Step 3: Cross multiply
   57,838.50x = 86,276.25 × 86,276.25
4. Step 4: Simplify right side
   57,838.50x = 7,443,591,314.06
5. Step 5: Solve for x
   x = 7,443,591,314.06/57,838.50
6. Step 6: Final answer
   x = 128,696.13