Finding the Third Proportional to 31,779.84 and 68,514.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,779.84 : 68,514.61 = 68,514.61 : x
2. Step 2: Convert to fraction form
   31,779.84/68,514.61 = 68,514.61/x
3. Step 3: Cross multiply
   31,779.84x = 68,514.61 × 68,514.61
4. Step 4: Simplify right side
   31,779.84x = 4,694,251,697.81
5. Step 5: Solve for x
   x = 4,694,251,697.81/31,779.84
6. Step 6: Final answer
   x = 147,711.60