Finding the Third Proportional to 191,779.50 and 417,021

Step by Step Solution

1. Step 1: Write the proportion equation
   191,779.50 : 417,021 = 417,021 : x
2. Step 2: Convert to fraction form
   191,779.50/417,021 = 417,021/x
3. Step 3: Cross multiply
   191,779.50x = 417,021 × 417,021
4. Step 4: Simplify right side
   191,779.50x = 173,906,514,441
5. Step 5: Solve for x
   x = 173,906,514,441/191,779.50
6. Step 6: Final answer
   x = 906,804.50