Finding the Third Proportional to 1,243,218 and 1,919,745

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,218 : 1,919,745 = 1,919,745 : x
2. Step 2: Convert to fraction form
   1,243,218/1,919,745 = 1,919,745/x
3. Step 3: Cross multiply
   1,243,218x = 1,919,745 × 1,919,745
4. Step 4: Simplify right side
   1,243,218x = 3,685,420,865,025
5. Step 5: Solve for x
   x = 3,685,420,865,025/1,243,218
6. Step 6: Final answer
   x = 2,964,420.45