Finding the Third Proportional to 766,639 and 1,122,074

Step by Step Solution

1. Step 1: Write the proportion equation
   766,639 : 1,122,074 = 1,122,074 : x
2. Step 2: Convert to fraction form
   766,639/1,122,074 = 1,122,074/x
3. Step 3: Cross multiply
   766,639x = 1,122,074 × 1,122,074
4. Step 4: Simplify right side
   766,639x = 1,259,050,061,476
5. Step 5: Solve for x
   x = 1,259,050,061,476/766,639
6. Step 6: Final answer
   x = 1,642,298.48