Finding the Third Proportional to 61,181.44 and 86,158.69

Step by Step Solution

1. Step 1: Write the proportion equation
   61,181.44 : 86,158.69 = 86,158.69 : x
2. Step 2: Convert to fraction form
   61,181.44/86,158.69 = 86,158.69/x
3. Step 3: Cross multiply
   61,181.44x = 86,158.69 × 86,158.69
4. Step 4: Simplify right side
   61,181.44x = 7,423,319,431.72
5. Step 5: Solve for x
   x = 7,423,319,431.72/61,181.44
6. Step 6: Final answer
   x = 121,332.87