Finding the Third Proportional to 62,947.69 and 128,804.06

Step by Step Solution

1. Step 1: Write the proportion equation
   62,947.69 : 128,804.06 = 128,804.06 : x
2. Step 2: Convert to fraction form
   62,947.69/128,804.06 = 128,804.06/x
3. Step 3: Cross multiply
   62,947.69x = 128,804.06 × 128,804.06
4. Step 4: Simplify right side
   62,947.69x = 16,590,486,516.50
5. Step 5: Solve for x
   x = 16,590,486,516.50/62,947.69
6. Step 6: Final answer
   x = 263,559.90