Finding the Third Proportional to 188,482.50 and 406,488

Step by Step Solution

1. Step 1: Write the proportion equation
   188,482.50 : 406,488 = 406,488 : x
2. Step 2: Convert to fraction form
   188,482.50/406,488 = 406,488/x
3. Step 3: Cross multiply
   188,482.50x = 406,488 × 406,488
4. Step 4: Simplify right side
   188,482.50x = 165,232,494,144
5. Step 5: Solve for x
   x = 165,232,494,144/188,482.50
6. Step 6: Final answer
   x = 876,646.34