Finding the Third Proportional to 387,247.50 and 838,830

Step by Step Solution

1. Step 1: Write the proportion equation
   387,247.50 : 838,830 = 838,830 : x
2. Step 2: Convert to fraction form
   387,247.50/838,830 = 838,830/x
3. Step 3: Cross multiply
   387,247.50x = 838,830 × 838,830
4. Step 4: Simplify right side
   387,247.50x = 703,635,768,900
5. Step 5: Solve for x
   x = 703,635,768,900/387,247.50
6. Step 6: Final answer
   x = 1,817,018.23