Finding the Third Proportional to 1,391,186 and 2,931,790

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,186 : 2,931,790 = 2,931,790 : x
2. Step 2: Convert to fraction form
   1,391,186/2,931,790 = 2,931,790/x
3. Step 3: Cross multiply
   1,391,186x = 2,931,790 × 2,931,790
4. Step 4: Simplify right side
   1,391,186x = 8,595,392,604,100
5. Step 5: Solve for x
   x = 8,595,392,604,100/1,391,186
6. Step 6: Final answer
   x = 6,178,463.99