Finding the Third Proportional to 212,463 and 456,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   212,463 : 456,502.50 = 456,502.50 : x
2. Step 2: Convert to fraction form
   212,463/456,502.50 = 456,502.50/x
3. Step 3: Cross multiply
   212,463x = 456,502.50 × 456,502.50
4. Step 4: Simplify right side
   212,463x = 208,394,532,506.25
5. Step 5: Solve for x
   x = 208,394,532,506.25/212,463
6. Step 6: Final answer
   x = 980,850.94