Finding the Third Proportional to 128,429.63 and 204,535.88

Step by Step Solution

1. Step 1: Write the proportion equation
   128,429.63 : 204,535.88 = 204,535.88 : x
2. Step 2: Convert to fraction form
   128,429.63/204,535.88 = 204,535.88/x
3. Step 3: Cross multiply
   128,429.63x = 204,535.88 × 204,535.88
4. Step 4: Simplify right side
   128,429.63x = 41,834,924,162.02
5. Step 5: Solve for x
   x = 41,834,924,162.02/128,429.63
6. Step 6: Final answer
   x = 325,742.01