Finding the Third Proportional to 1,853,487 and 3,991,374

Step by Step Solution

1. Step 1: Write the proportion equation
   1,853,487 : 3,991,374 = 3,991,374 : x
2. Step 2: Convert to fraction form
   1,853,487/3,991,374 = 3,991,374/x
3. Step 3: Cross multiply
   1,853,487x = 3,991,374 × 3,991,374
4. Step 4: Simplify right side
   1,853,487x = 15,931,066,407,876
5. Step 5: Solve for x
   x = 15,931,066,407,876/1,853,487
6. Step 6: Final answer
   x = 8,595,186.48