Finding the Third Proportional to 191,310 and 417,066

Step by Step Solution

1. Step 1: Write the proportion equation
   191,310 : 417,066 = 417,066 : x
2. Step 2: Convert to fraction form
   191,310/417,066 = 417,066/x
3. Step 3: Cross multiply
   191,310x = 417,066 × 417,066
4. Step 4: Simplify right side
   191,310x = 173,944,048,356
5. Step 5: Solve for x
   x = 173,944,048,356/191,310
6. Step 6: Final answer
   x = 909,226.12