Finding the Third Proportional to 155,160 and 221,470.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,160 : 221,470.50 = 221,470.50 : x
2. Step 2: Convert to fraction form
   155,160/221,470.50 = 221,470.50/x
3. Step 3: Cross multiply
   155,160x = 221,470.50 × 221,470.50
4. Step 4: Simplify right side
   155,160x = 49,049,182,370.25
5. Step 5: Solve for x
   x = 49,049,182,370.25/155,160
6. Step 6: Final answer
   x = 316,120.02