Finding the Third Proportional to 663,711 and 1,020,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,711 : 1,020,748.50 = 1,020,748.50 : x
2. Step 2: Convert to fraction form
   663,711/1,020,748.50 = 1,020,748.50/x
3. Step 3: Cross multiply
   663,711x = 1,020,748.50 × 1,020,748.50
4. Step 4: Simplify right side
   663,711x = 1,041,927,500,252.25
5. Step 5: Solve for x
   x = 1,041,927,500,252.25/663,711
6. Step 6: Final answer
   x = 1,569,851.19