Finding the Third Proportional to 636,916.50 and 977,488

Step by Step Solution

1. Step 1: Write the proportion equation
   636,916.50 : 977,488 = 977,488 : x
2. Step 2: Convert to fraction form
   636,916.50/977,488 = 977,488/x
3. Step 3: Cross multiply
   636,916.50x = 977,488 × 977,488
4. Step 4: Simplify right side
   636,916.50x = 955,482,790,144
5. Step 5: Solve for x
   x = 955,482,790,144/636,916.50
6. Step 6: Final answer
   x = 1,500,169.63