Finding the Third Proportional to 777,138 and 1,672,374

Step by Step Solution

1. Step 1: Write the proportion equation
   777,138 : 1,672,374 = 1,672,374 : x
2. Step 2: Convert to fraction form
   777,138/1,672,374 = 1,672,374/x
3. Step 3: Cross multiply
   777,138x = 1,672,374 × 1,672,374
4. Step 4: Simplify right side
   777,138x = 2,796,834,795,876
5. Step 5: Solve for x
   x = 2,796,834,795,876/777,138
6. Step 6: Final answer
   x = 3,598,890.80