Finding the Third Proportional to 445,978.13 and 635,751.56

Step by Step Solution

1. Step 1: Write the proportion equation
   445,978.13 : 635,751.56 = 635,751.56 : x
2. Step 2: Convert to fraction form
   445,978.13/635,751.56 = 635,751.56/x
3. Step 3: Cross multiply
   445,978.13x = 635,751.56 × 635,751.56
4. Step 4: Simplify right side
   445,978.13x = 404,180,049,221.19
5. Step 5: Solve for x
   x = 404,180,049,221.19/445,978.13
6. Step 6: Final answer
   x = 906,277.74