Finding the Third Proportional to 436,624 and 656,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   436,624 : 656,557.50 = 656,557.50 : x
2. Step 2: Convert to fraction form
   436,624/656,557.50 = 656,557.50/x
3. Step 3: Cross multiply
   436,624x = 656,557.50 × 656,557.50
4. Step 4: Simplify right side
   436,624x = 431,067,750,806.25
5. Step 5: Solve for x
   x = 431,067,750,806.25/436,624
6. Step 6: Final answer
   x = 987,274.52