Finding the Third Proportional to 69,320.25 and 141,918.47

Step by Step Solution

1. Step 1: Write the proportion equation
   69,320.25 : 141,918.47 = 141,918.47 : x
2. Step 2: Convert to fraction form
   69,320.25/141,918.47 = 141,918.47/x
3. Step 3: Cross multiply
   69,320.25x = 141,918.47 × 141,918.47
4. Step 4: Simplify right side
   69,320.25x = 20,140,851,772.34
5. Step 5: Solve for x
   x = 20,140,851,772.34/69,320.25
6. Step 6: Final answer
   x = 290,547.88