Finding the Third Proportional to 235,620 and 515,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   235,620 : 515,218.50 = 515,218.50 : x
2. Step 2: Convert to fraction form
   235,620/515,218.50 = 515,218.50/x
3. Step 3: Cross multiply
   235,620x = 515,218.50 × 515,218.50
4. Step 4: Simplify right side
   235,620x = 265,450,102,742.25
5. Step 5: Solve for x
   x = 265,450,102,742.25/235,620
6. Step 6: Final answer
   x = 1,126,602.59