Finding the Third Proportional to 49,057.31 and 66,577.88

Step by Step Solution

1. Step 1: Write the proportion equation
   49,057.31 : 66,577.88 = 66,577.88 : x
2. Step 2: Convert to fraction form
   49,057.31/66,577.88 = 66,577.88/x
3. Step 3: Cross multiply
   49,057.31x = 66,577.88 × 66,577.88
4. Step 4: Simplify right side
   49,057.31x = 4,432,613,439.52
5. Step 5: Solve for x
   x = 4,432,613,439.52/49,057.31
6. Step 6: Final answer
   x = 90,355.81