Finding the Third Proportional to 243,659 and 375,003

Step by Step Solution

1. Step 1: Write the proportion equation
   243,659 : 375,003 = 375,003 : x
2. Step 2: Convert to fraction form
   243,659/375,003 = 375,003/x
3. Step 3: Cross multiply
   243,659x = 375,003 × 375,003
4. Step 4: Simplify right side
   243,659x = 140,627,250,009
5. Step 5: Solve for x
   x = 140,627,250,009/243,659
6. Step 6: Final answer
   x = 577,147.78