Finding the Third Proportional to 70,038 and 105,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,038 : 105,128.72 = 105,128.72 : x
2. Step 2: Convert to fraction form
   70,038/105,128.72 = 105,128.72/x
3. Step 3: Cross multiply
   70,038x = 105,128.72 × 105,128.72
4. Step 4: Simplify right side
   70,038x = 11,052,047,506.02
5. Step 5: Solve for x
   x = 11,052,047,506.02/70,038
6. Step 6: Final answer
   x = 157,800.73