Finding the Third Proportional to 777,128 and 1,672,354

Step by Step Solution

1. Step 1: Write the proportion equation
   777,128 : 1,672,354 = 1,672,354 : x
2. Step 2: Convert to fraction form
   777,128/1,672,354 = 1,672,354/x
3. Step 3: Cross multiply
   777,128x = 1,672,354 × 1,672,354
4. Step 4: Simplify right side
   777,128x = 2,796,767,901,316
5. Step 5: Solve for x
   x = 2,796,767,901,316/777,128
6. Step 6: Final answer
   x = 3,598,851.03