Finding the Third Proportional to 39,411.66 and 86,487.95

Step by Step Solution

1. Step 1: Write the proportion equation
   39,411.66 : 86,487.95 = 86,487.95 : x
2. Step 2: Convert to fraction form
   39,411.66/86,487.95 = 86,487.95/x
3. Step 3: Cross multiply
   39,411.66x = 86,487.95 × 86,487.95
4. Step 4: Simplify right side
   39,411.66x = 7,480,166,035.75
5. Step 5: Solve for x
   x = 7,480,166,035.75/39,411.66
6. Step 6: Final answer
   x = 189,795.74