Finding the Third Proportional to 154,446 and 316,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,446 : 316,417.50 = 316,417.50 : x
2. Step 2: Convert to fraction form
   154,446/316,417.50 = 316,417.50/x
3. Step 3: Cross multiply
   154,446x = 316,417.50 × 316,417.50
4. Step 4: Simplify right side
   154,446x = 100,120,034,306.25
5. Step 5: Solve for x
   x = 100,120,034,306.25/154,446
6. Step 6: Final answer
   x = 648,252.69