Finding the Third Proportional to 1,478,432 and 3,111,408

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478,432 : 3,111,408 = 3,111,408 : x
2. Step 2: Convert to fraction form
   1,478,432/3,111,408 = 3,111,408/x
3. Step 3: Cross multiply
   1,478,432x = 3,111,408 × 3,111,408
4. Step 4: Simplify right side
   1,478,432x = 9,680,859,742,464
5. Step 5: Solve for x
   x = 9,680,859,742,464/1,478,432
6. Step 6: Final answer
   x = 6,548,058.85