Finding the Third Proportional to 686,630 and 1,005,364

Step by Step Solution

1. Step 1: Write the proportion equation
   686,630 : 1,005,364 = 1,005,364 : x
2. Step 2: Convert to fraction form
   686,630/1,005,364 = 1,005,364/x
3. Step 3: Cross multiply
   686,630x = 1,005,364 × 1,005,364
4. Step 4: Simplify right side
   686,630x = 1,010,756,772,496
5. Step 5: Solve for x
   x = 1,010,756,772,496/686,630
6. Step 6: Final answer
   x = 1,472,054.49