Finding the Third Proportional to 1,391,020 and 2,931,485

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,020 : 2,931,485 = 2,931,485 : x
2. Step 2: Convert to fraction form
   1,391,020/2,931,485 = 2,931,485/x
3. Step 3: Cross multiply
   1,391,020x = 2,931,485 × 2,931,485
4. Step 4: Simplify right side
   1,391,020x = 8,593,604,305,225
5. Step 5: Solve for x
   x = 8,593,604,305,225/1,391,020
6. Step 6: Final answer
   x = 6,177,915.71