Finding the Third Proportional to 147,429 and 220,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,429 : 220,891.50 = 220,891.50 : x
2. Step 2: Convert to fraction form
   147,429/220,891.50 = 220,891.50/x
3. Step 3: Cross multiply
   147,429x = 220,891.50 × 220,891.50
4. Step 4: Simplify right side
   147,429x = 48,793,054,772.25
5. Step 5: Solve for x
   x = 48,793,054,772.25/147,429
6. Step 6: Final answer
   x = 330,959.68