Finding the Third Proportional to 404,070 and 606,105

Step by Step Solution

1. Step 1: Write the proportion equation
   404,070 : 606,105 = 606,105 : x
2. Step 2: Convert to fraction form
   404,070/606,105 = 606,105/x
3. Step 3: Cross multiply
   404,070x = 606,105 × 606,105
4. Step 4: Simplify right side
   404,070x = 367,363,271,025
5. Step 5: Solve for x
   x = 367,363,271,025/404,070
6. Step 6: Final answer
   x = 909,157.50