Finding the Third Proportional to 209,044.50 and 308,646

Step by Step Solution

1. Step 1: Write the proportion equation
   209,044.50 : 308,646 = 308,646 : x
2. Step 2: Convert to fraction form
   209,044.50/308,646 = 308,646/x
3. Step 3: Cross multiply
   209,044.50x = 308,646 × 308,646
4. Step 4: Simplify right side
   209,044.50x = 95,262,353,316
5. Step 5: Solve for x
   x = 95,262,353,316/209,044.50
6. Step 6: Final answer
   x = 455,703.71