Finding the Third Proportional to 1,311,384 and 1,979,124

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,384 : 1,979,124 = 1,979,124 : x
2. Step 2: Convert to fraction form
   1,311,384/1,979,124 = 1,979,124/x
3. Step 3: Cross multiply
   1,311,384x = 1,979,124 × 1,979,124
4. Step 4: Simplify right side
   1,311,384x = 3,916,931,807,376
5. Step 5: Solve for x
   x = 3,916,931,807,376/1,311,384
6. Step 6: Final answer
   x = 2,986,868.69