Finding the Third Proportional to 1,584,374 and 3,421,270

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,374 : 3,421,270 = 3,421,270 : x
2. Step 2: Convert to fraction form
   1,584,374/3,421,270 = 3,421,270/x
3. Step 3: Cross multiply
   1,584,374x = 3,421,270 × 3,421,270
4. Step 4: Simplify right side
   1,584,374x = 11,705,088,412,900
5. Step 5: Solve for x
   x = 11,705,088,412,900/1,584,374
6. Step 6: Final answer
   x = 7,387,831.67