Finding the Third Proportional to 40,372.31 and 57,790.13

Step by Step Solution

1. Step 1: Write the proportion equation
   40,372.31 : 57,790.13 = 57,790.13 : x
2. Step 2: Convert to fraction form
   40,372.31/57,790.13 = 57,790.13/x
3. Step 3: Cross multiply
   40,372.31x = 57,790.13 × 57,790.13
4. Step 4: Simplify right side
   40,372.31x = 3,339,698,547.52
5. Step 5: Solve for x
   x = 3,339,698,547.52/40,372.31
6. Step 6: Final answer
   x = 82,722.50