Finding the Third Proportional to 118,374 and 245,478

Step by Step Solution

1. Step 1: Write the proportion equation
   118,374 : 245,478 = 245,478 : x
2. Step 2: Convert to fraction form
   118,374/245,478 = 245,478/x
3. Step 3: Cross multiply
   118,374x = 245,478 × 245,478
4. Step 4: Simplify right side
   118,374x = 60,259,448,484
5. Step 5: Solve for x
   x = 60,259,448,484/118,374
6. Step 6: Final answer
   x = 509,059.83