Finding the Third Proportional to 118,839 and 245,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,839 : 245,980.50 = 245,980.50 : x
2. Step 2: Convert to fraction form
   118,839/245,980.50 = 245,980.50/x
3. Step 3: Cross multiply
   118,839x = 245,980.50 × 245,980.50
4. Step 4: Simplify right side
   118,839x = 60,506,406,380.25
5. Step 5: Solve for x
   x = 60,506,406,380.25/118,839
6. Step 6: Final answer
   x = 509,146.04