Finding the Third Proportional to 66,116.75 and 145,354

Step by Step Solution

1. Step 1: Write the proportion equation
   66,116.75 : 145,354 = 145,354 : x
2. Step 2: Convert to fraction form
   66,116.75/145,354 = 145,354/x
3. Step 3: Cross multiply
   66,116.75x = 145,354 × 145,354
4. Step 4: Simplify right side
   66,116.75x = 21,127,785,316
5. Step 5: Solve for x
   x = 21,127,785,316/66,116.75
6. Step 6: Final answer
   x = 319,552.69