Finding the Third Proportional to 61,213.92 and 86,695.10

Step by Step Solution

1. Step 1: Write the proportion equation
   61,213.92 : 86,695.10 = 86,695.10 : x
2. Step 2: Convert to fraction form
   61,213.92/86,695.10 = 86,695.10/x
3. Step 3: Cross multiply
   61,213.92x = 86,695.10 × 86,695.10
4. Step 4: Simplify right side
   61,213.92x = 7,516,040,634.93
5. Step 5: Solve for x
   x = 7,516,040,634.93/61,213.92
6. Step 6: Final answer
   x = 122,783.19