Finding the Third Proportional to 191,196 and 415,560

Step by Step Solution

1. Step 1: Write the proportion equation
   191,196 : 415,560 = 415,560 : x
2. Step 2: Convert to fraction form
   191,196/415,560 = 415,560/x
3. Step 3: Cross multiply
   191,196x = 415,560 × 415,560
4. Step 4: Simplify right side
   191,196x = 172,690,113,600
5. Step 5: Solve for x
   x = 172,690,113,600/191,196
6. Step 6: Final answer
   x = 903,209.87