Finding the Third Proportional to 680,386 and 1,426,382

Step by Step Solution

1. Step 1: Write the proportion equation
   680,386 : 1,426,382 = 1,426,382 : x
2. Step 2: Convert to fraction form
   680,386/1,426,382 = 1,426,382/x
3. Step 3: Cross multiply
   680,386x = 1,426,382 × 1,426,382
4. Step 4: Simplify right side
   680,386x = 2,034,565,609,924
5. Step 5: Solve for x
   x = 2,034,565,609,924/680,386
6. Step 6: Final answer
   x = 2,990,310.81