Finding the Third Proportional to 128,100 and 192,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,100 : 192,562.50 = 192,562.50 : x
2. Step 2: Convert to fraction form
   128,100/192,562.50 = 192,562.50/x
3. Step 3: Cross multiply
   128,100x = 192,562.50 × 192,562.50
4. Step 4: Simplify right side
   128,100x = 37,080,316,406.25
5. Step 5: Solve for x
   x = 37,080,316,406.25/128,100
6. Step 6: Final answer
   x = 289,463.83