Finding the Third Proportional to 637,484 and 1,387,123

Step by Step Solution

1. Step 1: Write the proportion equation
   637,484 : 1,387,123 = 1,387,123 : x
2. Step 2: Convert to fraction form
   637,484/1,387,123 = 1,387,123/x
3. Step 3: Cross multiply
   637,484x = 1,387,123 × 1,387,123
4. Step 4: Simplify right side
   637,484x = 1,924,110,217,129
5. Step 5: Solve for x
   x = 1,924,110,217,129/637,484
6. Step 6: Final answer
   x = 3,018,287.86