Finding the Third Proportional to 57,802.50 and 86,312.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,802.50 : 86,312.25 = 86,312.25 : x
2. Step 2: Convert to fraction form
   57,802.50/86,312.25 = 86,312.25/x
3. Step 3: Cross multiply
   57,802.50x = 86,312.25 × 86,312.25
4. Step 4: Simplify right side
   57,802.50x = 7,449,804,500.06
5. Step 5: Solve for x
   x = 7,449,804,500.06/57,802.50
6. Step 6: Final answer
   x = 128,883.78