Finding the Third Proportional to 142,279.50 and 300,232.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,279.50 : 300,232.50 = 300,232.50 : x
2. Step 2: Convert to fraction form
   142,279.50/300,232.50 = 300,232.50/x
3. Step 3: Cross multiply
   142,279.50x = 300,232.50 × 300,232.50
4. Step 4: Simplify right side
   142,279.50x = 90,139,554,056.25
5. Step 5: Solve for x
   x = 90,139,554,056.25/142,279.50
6. Step 6: Final answer
   x = 633,538.59