Finding the Third Proportional to 1,584,428 and 3,421,362

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,428 : 3,421,362 = 3,421,362 : x
2. Step 2: Convert to fraction form
   1,584,428/3,421,362 = 3,421,362/x
3. Step 3: Cross multiply
   1,584,428x = 3,421,362 × 3,421,362
4. Step 4: Simplify right side
   1,584,428x = 11,705,717,935,044
5. Step 5: Solve for x
   x = 11,705,717,935,044/1,584,428
6. Step 6: Final answer
   x = 7,387,977.20