Finding the Third Proportional to 762,420 and 1,121,454

Step by Step Solution

1. Step 1: Write the proportion equation
   762,420 : 1,121,454 = 1,121,454 : x
2. Step 2: Convert to fraction form
   762,420/1,121,454 = 1,121,454/x
3. Step 3: Cross multiply
   762,420x = 1,121,454 × 1,121,454
4. Step 4: Simplify right side
   762,420x = 1,257,659,074,116
5. Step 5: Solve for x
   x = 1,257,659,074,116/762,420
6. Step 6: Final answer
   x = 1,649,562.02