Finding the Third Proportional to 191,332.50 and 417,111

Step by Step Solution

1. Step 1: Write the proportion equation
   191,332.50 : 417,111 = 417,111 : x
2. Step 2: Convert to fraction form
   191,332.50/417,111 = 417,111/x
3. Step 3: Cross multiply
   191,332.50x = 417,111 × 417,111
4. Step 4: Simplify right side
   191,332.50x = 173,981,586,321
5. Step 5: Solve for x
   x = 173,981,586,321/191,332.50
6. Step 6: Final answer
   x = 909,315.39