Finding the Third Proportional to 1,584,376 and 3,421,274

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,376 : 3,421,274 = 3,421,274 : x
2. Step 2: Convert to fraction form
   1,584,376/3,421,274 = 3,421,274/x
3. Step 3: Cross multiply
   1,584,376x = 3,421,274 × 3,421,274
4. Step 4: Simplify right side
   1,584,376x = 11,705,115,783,076
5. Step 5: Solve for x
   x = 11,705,115,783,076/1,584,376
6. Step 6: Final answer
   x = 7,387,839.62