Finding the Third Proportional to 31,422.30 and 68,372.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,422.30 : 68,372.86 = 68,372.86 : x
2. Step 2: Convert to fraction form
   31,422.30/68,372.86 = 68,372.86/x
3. Step 3: Cross multiply
   31,422.30x = 68,372.86 × 68,372.86
4. Step 4: Simplify right side
   31,422.30x = 4,674,847,899.11
5. Step 5: Solve for x
   x = 4,674,847,899.11/31,422.30
6. Step 6: Final answer
   x = 148,774.83