Finding the Third Proportional to 1,584,360 and 3,421,278

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,360 : 3,421,278 = 3,421,278 : x
2. Step 2: Convert to fraction form
   1,584,360/3,421,278 = 3,421,278/x
3. Step 3: Cross multiply
   1,584,360x = 3,421,278 × 3,421,278
4. Step 4: Simplify right side
   1,584,360x = 11,705,143,153,284
5. Step 5: Solve for x
   x = 11,705,143,153,284/1,584,360
6. Step 6: Final answer
   x = 7,387,931.50