Finding the Third Proportional to 691,320 and 1,066,460

Step by Step Solution

1. Step 1: Write the proportion equation
   691,320 : 1,066,460 = 1,066,460 : x
2. Step 2: Convert to fraction form
   691,320/1,066,460 = 1,066,460/x
3. Step 3: Cross multiply
   691,320x = 1,066,460 × 1,066,460
4. Step 4: Simplify right side
   691,320x = 1,137,336,931,600
5. Step 5: Solve for x
   x = 1,137,336,931,600/691,320
6. Step 6: Final answer
   x = 1,645,167.12