Finding the Third Proportional to 915,390 and 1,993,515

Step by Step Solution

1. Step 1: Write the proportion equation
   915,390 : 1,993,515 = 1,993,515 : x
2. Step 2: Convert to fraction form
   915,390/1,993,515 = 1,993,515/x
3. Step 3: Cross multiply
   915,390x = 1,993,515 × 1,993,515
4. Step 4: Simplify right side
   915,390x = 3,974,102,055,225
5. Step 5: Solve for x
   x = 3,974,102,055,225/915,390
6. Step 6: Final answer
   x = 4,341,430.49