Finding the Third Proportional to 1,311,374 and 1,979,109

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,374 : 1,979,109 = 1,979,109 : x
2. Step 2: Convert to fraction form
   1,311,374/1,979,109 = 1,979,109/x
3. Step 3: Cross multiply
   1,311,374x = 1,979,109 × 1,979,109
4. Step 4: Simplify right side
   1,311,374x = 3,916,872,433,881
5. Step 5: Solve for x
   x = 3,916,872,433,881/1,311,374
6. Step 6: Final answer
   x = 2,986,846.19