Finding the Third Proportional to 85,870.50 and 126,321

Step by Step Solution

1. Step 1: Write the proportion equation
   85,870.50 : 126,321 = 126,321 : x
2. Step 2: Convert to fraction form
   85,870.50/126,321 = 126,321/x
3. Step 3: Cross multiply
   85,870.50x = 126,321 × 126,321
4. Step 4: Simplify right side
   85,870.50x = 15,956,995,041
5. Step 5: Solve for x
   x = 15,956,995,041/85,870.50
6. Step 6: Final answer
   x = 185,826.27