Finding the Third Proportional to 1,584,432 and 3,421,370

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,432 : 3,421,370 = 3,421,370 : x
2. Step 2: Convert to fraction form
   1,584,432/3,421,370 = 3,421,370/x
3. Step 3: Cross multiply
   1,584,432x = 3,421,370 × 3,421,370
4. Step 4: Simplify right side
   1,584,432x = 11,705,772,676,900
5. Step 5: Solve for x
   x = 11,705,772,676,900/1,584,432
6. Step 6: Final answer
   x = 7,387,993.10