Finding the Third Proportional to 909,939 and 1,377,438

Step by Step Solution

1. Step 1: Write the proportion equation
   909,939 : 1,377,438 = 1,377,438 : x
2. Step 2: Convert to fraction form
   909,939/1,377,438 = 1,377,438/x
3. Step 3: Cross multiply
   909,939x = 1,377,438 × 1,377,438
4. Step 4: Simplify right side
   909,939x = 1,897,335,443,844
5. Step 5: Solve for x
   x = 1,897,335,443,844/909,939
6. Step 6: Final answer
   x = 2,085,123.78