Finding the Third Proportional to 328,392.50 and 709,173

Step by Step Solution

1. Step 1: Write the proportion equation
   328,392.50 : 709,173 = 709,173 : x
2. Step 2: Convert to fraction form
   328,392.50/709,173 = 709,173/x
3. Step 3: Cross multiply
   328,392.50x = 709,173 × 709,173
4. Step 4: Simplify right side
   328,392.50x = 502,926,343,929
5. Step 5: Solve for x
   x = 502,926,343,929/328,392.50
6. Step 6: Final answer
   x = 1,531,479.38