Finding the Third Proportional to 163,959 and 358,294.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,959 : 358,294.50 = 358,294.50 : x
2. Step 2: Convert to fraction form
   163,959/358,294.50 = 358,294.50/x
3. Step 3: Cross multiply
   163,959x = 358,294.50 × 358,294.50
4. Step 4: Simplify right side
   163,959x = 128,374,948,730.25
5. Step 5: Solve for x
   x = 128,374,948,730.25/163,959
6. Step 6: Final answer
   x = 782,969.82