Finding the Third Proportional to 71,401.50 and 166,870.13

Step by Step Solution

1. Step 1: Write the proportion equation
   71,401.50 : 166,870.13 = 166,870.13 : x
2. Step 2: Convert to fraction form
   71,401.50/166,870.13 = 166,870.13/x
3. Step 3: Cross multiply
   71,401.50x = 166,870.13 × 166,870.13
4. Step 4: Simplify right side
   71,401.50x = 27,845,638,617.52
5. Step 5: Solve for x
   x = 27,845,638,617.52/71,401.50
6. Step 6: Final answer
   x = 389,986.75