Finding the Third Proportional to 1,578,543 and 3,409,685

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,543 : 3,409,685 = 3,409,685 : x
2. Step 2: Convert to fraction form
   1,578,543/3,409,685 = 3,409,685/x
3. Step 3: Cross multiply
   1,578,543x = 3,409,685 × 3,409,685
4. Step 4: Simplify right side
   1,578,543x = 11,625,951,799,225
5. Step 5: Solve for x
   x = 11,625,951,799,225/1,578,543
6. Step 6: Final answer
   x = 7,364,988.98