Finding the Third Proportional to 1,243,900 and 1,980,274

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,900 : 1,980,274 = 1,980,274 : x
2. Step 2: Convert to fraction form
   1,243,900/1,980,274 = 1,980,274/x
3. Step 3: Cross multiply
   1,243,900x = 1,980,274 × 1,980,274
4. Step 4: Simplify right side
   1,243,900x = 3,921,485,115,076
5. Step 5: Solve for x
   x = 3,921,485,115,076/1,243,900
6. Step 6: Final answer
   x = 3,152,572.65