Finding the Third Proportional to 307,254 and 635,820

Step by Step Solution

1. Step 1: Write the proportion equation
   307,254 : 635,820 = 635,820 : x
2. Step 2: Convert to fraction form
   307,254/635,820 = 635,820/x
3. Step 3: Cross multiply
   307,254x = 635,820 × 635,820
4. Step 4: Simplify right side
   307,254x = 404,267,072,400
5. Step 5: Solve for x
   x = 404,267,072,400/307,254
6. Step 6: Final answer
   x = 1,315,742.26