Finding the Third Proportional to 133,979 and 213,268.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,979 : 213,268.50 = 213,268.50 : x
2. Step 2: Convert to fraction form
   133,979/213,268.50 = 213,268.50/x
3. Step 3: Cross multiply
   133,979x = 213,268.50 × 213,268.50
4. Step 4: Simplify right side
   133,979x = 45,483,453,092.25
5. Step 5: Solve for x
   x = 45,483,453,092.25/133,979
6. Step 6: Final answer
   x = 339,481.96