Finding the Third Proportional to 1,243,604 and 1,920,366

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,604 : 1,920,366 = 1,920,366 : x
2. Step 2: Convert to fraction form
   1,243,604/1,920,366 = 1,920,366/x
3. Step 3: Cross multiply
   1,243,604x = 1,920,366 × 1,920,366
4. Step 4: Simplify right side
   1,243,604x = 3,687,805,573,956
5. Step 5: Solve for x
   x = 3,687,805,573,956/1,243,604
6. Step 6: Final answer
   x = 2,965,417.91