Finding the Third Proportional to 152,982 and 220,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   152,982 : 220,339.50 = 220,339.50 : x
2. Step 2: Convert to fraction form
   152,982/220,339.50 = 220,339.50/x
3. Step 3: Cross multiply
   152,982x = 220,339.50 × 220,339.50
4. Step 4: Simplify right side
   152,982x = 48,549,495,260.25
5. Step 5: Solve for x
   x = 48,549,495,260.25/152,982
6. Step 6: Final answer
   x = 317,354.30