Finding the Third Proportional to 57,091.50 and 81,146.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,091.50 : 81,146.25 = 81,146.25 : x
2. Step 2: Convert to fraction form
   57,091.50/81,146.25 = 81,146.25/x
3. Step 3: Cross multiply
   57,091.50x = 81,146.25 × 81,146.25
4. Step 4: Simplify right side
   57,091.50x = 6,584,713,889.06
5. Step 5: Solve for x
   x = 6,584,713,889.06/57,091.50
6. Step 6: Final answer
   x = 115,336.15