Finding the Third Proportional to 691,314 and 1,066,451

Step by Step Solution

1. Step 1: Write the proportion equation
   691,314 : 1,066,451 = 1,066,451 : x
2. Step 2: Convert to fraction form
   691,314/1,066,451 = 1,066,451/x
3. Step 3: Cross multiply
   691,314x = 1,066,451 × 1,066,451
4. Step 4: Simplify right side
   691,314x = 1,137,317,735,401
5. Step 5: Solve for x
   x = 1,137,317,735,401/691,314
6. Step 6: Final answer
   x = 1,645,153.63