Finding the Third Proportional to 70,107.19 and 105,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   70,107.19 : 105,139.69 = 105,139.69 : x
2. Step 2: Convert to fraction form
   70,107.19/105,139.69 = 105,139.69/x
3. Step 3: Cross multiply
   70,107.19x = 105,139.69 × 105,139.69
4. Step 4: Simplify right side
   70,107.19x = 11,054,353,887.60
5. Step 5: Solve for x
   x = 11,054,353,887.60/70,107.19
6. Step 6: Final answer
   x = 157,677.90