Finding the Third Proportional to 71,978.63 and 168,150.94

Step by Step Solution

1. Step 1: Write the proportion equation
   71,978.63 : 168,150.94 = 168,150.94 : x
2. Step 2: Convert to fraction form
   71,978.63/168,150.94 = 168,150.94/x
3. Step 3: Cross multiply
   71,978.63x = 168,150.94 × 168,150.94
4. Step 4: Simplify right side
   71,978.63x = 28,274,737,782.13
5. Step 5: Solve for x
   x = 28,274,737,782.13/71,978.63
6. Step 6: Final answer
   x = 392,821.31