Finding the Third Proportional to 1,832,347 and 3,989,990

Step by Step Solution

1. Step 1: Write the proportion equation
   1,832,347 : 3,989,990 = 3,989,990 : x
2. Step 2: Convert to fraction form
   1,832,347/3,989,990 = 3,989,990/x
3. Step 3: Cross multiply
   1,832,347x = 3,989,990 × 3,989,990
4. Step 4: Simplify right side
   1,832,347x = 15,920,020,200,100
5. Step 5: Solve for x
   x = 15,920,020,200,100/1,832,347
6. Step 6: Final answer
   x = 8,688,321.70