Finding the Third Proportional to 70,485.38 and 147,890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   70,485.38 : 147,890.25 = 147,890.25 : x
2. Step 2: Convert to fraction form
   70,485.38/147,890.25 = 147,890.25/x
3. Step 3: Cross multiply
   70,485.38x = 147,890.25 × 147,890.25
4. Step 4: Simplify right side
   70,485.38x = 21,871,526,045.06
5. Step 5: Solve for x
   x = 21,871,526,045.06/70,485.38
6. Step 6: Final answer
   x = 310,298.78