Finding the Third Proportional to 1,780,584 and 3,945,432

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,584 : 3,945,432 = 3,945,432 : x
2. Step 2: Convert to fraction form
   1,780,584/3,945,432 = 3,945,432/x
3. Step 3: Cross multiply
   1,780,584x = 3,945,432 × 3,945,432
4. Step 4: Simplify right side
   1,780,584x = 15,566,433,666,624
5. Step 5: Solve for x
   x = 15,566,433,666,624/1,780,584
6. Step 6: Final answer
   x = 8,742,319.19