Finding the Third Proportional to 169,128 and 267,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   169,128 : 267,604.50 = 267,604.50 : x
2. Step 2: Convert to fraction form
   169,128/267,604.50 = 267,604.50/x
3. Step 3: Cross multiply
   169,128x = 267,604.50 × 267,604.50
4. Step 4: Simplify right side
   169,128x = 71,612,168,420.25
5. Step 5: Solve for x
   x = 71,612,168,420.25/169,128
6. Step 6: Final answer
   x = 423,419.94