Finding the Third Proportional to 40,699.50 and 87,240

Step by Step Solution

1. Step 1: Write the proportion equation
   40,699.50 : 87,240 = 87,240 : x
2. Step 2: Convert to fraction form
   40,699.50/87,240 = 87,240/x
3. Step 3: Cross multiply
   40,699.50x = 87,240 × 87,240
4. Step 4: Simplify right side
   40,699.50x = 7,610,817,600
5. Step 5: Solve for x
   x = 7,610,817,600/40,699.50
6. Step 6: Final answer
   x = 187,000.27