Finding the Third Proportional to 128,632.50 and 183,490

Step by Step Solution

1. Step 1: Write the proportion equation
   128,632.50 : 183,490 = 183,490 : x
2. Step 2: Convert to fraction form
   128,632.50/183,490 = 183,490/x
3. Step 3: Cross multiply
   128,632.50x = 183,490 × 183,490
4. Step 4: Simplify right side
   128,632.50x = 33,668,580,100
5. Step 5: Solve for x
   x = 33,668,580,100/128,632.50
6. Step 6: Final answer
   x = 261,742.41