Finding the Third Proportional to 238,474.13 and 308,503.69

Step by Step Solution

1. Step 1: Write the proportion equation
   238,474.13 : 308,503.69 = 308,503.69 : x
2. Step 2: Convert to fraction form
   238,474.13/308,503.69 = 308,503.69/x
3. Step 3: Cross multiply
   238,474.13x = 308,503.69 × 308,503.69
4. Step 4: Simplify right side
   238,474.13x = 95,174,525,201.10
5. Step 5: Solve for x
   x = 95,174,525,201.10/238,474.13
6. Step 6: Final answer
   x = 399,097.91