Finding the Third Proportional to 128,815.31 and 194,632.88

Step by Step Solution

1. Step 1: Write the proportion equation
   128,815.31 : 194,632.88 = 194,632.88 : x
2. Step 2: Convert to fraction form
   128,815.31/194,632.88 = 194,632.88/x
3. Step 3: Cross multiply
   128,815.31x = 194,632.88 × 194,632.88
4. Step 4: Simplify right side
   128,815.31x = 37,881,956,030.77
5. Step 5: Solve for x
   x = 37,881,956,030.77/128,815.31
6. Step 6: Final answer
   x = 294,079.60