Finding the Third Proportional to 42,309 and 100,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309 : 100,237.50 = 100,237.50 : x
2. Step 2: Convert to fraction form
   42,309/100,237.50 = 100,237.50/x
3. Step 3: Cross multiply
   42,309x = 100,237.50 × 100,237.50
4. Step 4: Simplify right side
   42,309x = 10,047,556,406.25
5. Step 5: Solve for x
   x = 10,047,556,406.25/42,309
6. Step 6: Final answer
   x = 237,480.36