Finding the Third Proportional to 216,319.50 and 469,143

Step by Step Solution

1. Step 1: Write the proportion equation
   216,319.50 : 469,143 = 469,143 : x
2. Step 2: Convert to fraction form
   216,319.50/469,143 = 469,143/x
3. Step 3: Cross multiply
   216,319.50x = 469,143 × 469,143
4. Step 4: Simplify right side
   216,319.50x = 220,095,154,449
5. Step 5: Solve for x
   x = 220,095,154,449/216,319.50
6. Step 6: Final answer
   x = 1,017,454.06