Finding the Third Proportional to 163,726.50 and 357,890

Step by Step Solution

1. Step 1: Write the proportion equation
   163,726.50 : 357,890 = 357,890 : x
2. Step 2: Convert to fraction form
   163,726.50/357,890 = 357,890/x
3. Step 3: Cross multiply
   163,726.50x = 357,890 × 357,890
4. Step 4: Simplify right side
   163,726.50x = 128,085,252,100
5. Step 5: Solve for x
   x = 128,085,252,100/163,726.50
6. Step 6: Final answer
   x = 782,312.28