Finding the Third Proportional to 191,312 and 417,070

Step by Step Solution

1. Step 1: Write the proportion equation
   191,312 : 417,070 = 417,070 : x
2. Step 2: Convert to fraction form
   191,312/417,070 = 417,070/x
3. Step 3: Cross multiply
   191,312x = 417,070 × 417,070
4. Step 4: Simplify right side
   191,312x = 173,947,384,900
5. Step 5: Solve for x
   x = 173,947,384,900/191,312
6. Step 6: Final answer
   x = 909,234.05