Finding the Third Proportional to 28,678.64 and 61,507.83

Step by Step Solution

1. Step 1: Write the proportion equation
   28,678.64 : 61,507.83 = 61,507.83 : x
2. Step 2: Convert to fraction form
   28,678.64/61,507.83 = 61,507.83/x
3. Step 3: Cross multiply
   28,678.64x = 61,507.83 × 61,507.83
4. Step 4: Simplify right side
   28,678.64x = 3,783,212,920.65
5. Step 5: Solve for x
   x = 3,783,212,920.65/28,678.64
6. Step 6: Final answer
   x = 131,917.44