Finding the Third Proportional to 71,365 and 168,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,365 : 168,772.50 = 168,772.50 : x
2. Step 2: Convert to fraction form
   71,365/168,772.50 = 168,772.50/x
3. Step 3: Cross multiply
   71,365x = 168,772.50 × 168,772.50
4. Step 4: Simplify right side
   71,365x = 28,484,156,756.25
5. Step 5: Solve for x
   x = 28,484,156,756.25/71,365
6. Step 6: Final answer
   x = 399,133.42