Finding the Third Proportional to 216,612 and 334,752.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,612 : 334,752.50 = 334,752.50 : x
2. Step 2: Convert to fraction form
   216,612/334,752.50 = 334,752.50/x
3. Step 3: Cross multiply
   216,612x = 334,752.50 × 334,752.50
4. Step 4: Simplify right side
   216,612x = 112,059,236,256.25
5. Step 5: Solve for x
   x = 112,059,236,256.25/216,612
6. Step 6: Final answer
   x = 517,327.00