Finding the Third Proportional to 170,046 and 256,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,046 : 256,981.50 = 256,981.50 : x
2. Step 2: Convert to fraction form
   170,046/256,981.50 = 256,981.50/x
3. Step 3: Cross multiply
   170,046x = 256,981.50 × 256,981.50
4. Step 4: Simplify right side
   170,046x = 66,039,491,342.25
5. Step 5: Solve for x
   x = 66,039,491,342.25/170,046
6. Step 6: Final answer
   x = 388,362.51