Finding the Third Proportional to 212,089.50 and 456,687

Step by Step Solution

1. Step 1: Write the proportion equation
   212,089.50 : 456,687 = 456,687 : x
2. Step 2: Convert to fraction form
   212,089.50/456,687 = 456,687/x
3. Step 3: Cross multiply
   212,089.50x = 456,687 × 456,687
4. Step 4: Simplify right side
   212,089.50x = 208,563,015,969
5. Step 5: Solve for x
   x = 208,563,015,969/212,089.50
6. Step 6: Final answer
   x = 983,372.66