Finding the Third Proportional to 31,826.81 and 70,009.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,826.81 : 70,009.31 = 70,009.31 : x
2. Step 2: Convert to fraction form
   31,826.81/70,009.31 = 70,009.31/x
3. Step 3: Cross multiply
   31,826.81x = 70,009.31 × 70,009.31
4. Step 4: Simplify right side
   31,826.81x = 4,901,303,836.72
5. Step 5: Solve for x
   x = 4,901,303,836.72/31,826.81
6. Step 6: Final answer
   x = 153,999.21