Finding the Third Proportional to 766,624 and 1,612,688

Step by Step Solution

1. Step 1: Write the proportion equation
   766,624 : 1,612,688 = 1,612,688 : x
2. Step 2: Convert to fraction form
   766,624/1,612,688 = 1,612,688/x
3. Step 3: Cross multiply
   766,624x = 1,612,688 × 1,612,688
4. Step 4: Simplify right side
   766,624x = 2,600,762,585,344
5. Step 5: Solve for x
   x = 2,600,762,585,344/766,624
6. Step 6: Final answer
   x = 3,392,487.82