Finding the Third Proportional to 172,308 and 365,070

Step by Step Solution

1. Step 1: Write the proportion equation
   172,308 : 365,070 = 365,070 : x
2. Step 2: Convert to fraction form
   172,308/365,070 = 365,070/x
3. Step 3: Cross multiply
   172,308x = 365,070 × 365,070
4. Step 4: Simplify right side
   172,308x = 133,276,104,900
5. Step 5: Solve for x
   x = 133,276,104,900/172,308
6. Step 6: Final answer
   x = 773,476.01