Finding the Third Proportional to 68,870.25 and 146,012.63

Step by Step Solution

1. Step 1: Write the proportion equation
   68,870.25 : 146,012.63 = 146,012.63 : x
2. Step 2: Convert to fraction form
   68,870.25/146,012.63 = 146,012.63/x
3. Step 3: Cross multiply
   68,870.25x = 146,012.63 × 146,012.63
4. Step 4: Simplify right side
   68,870.25x = 21,319,686,659.39
5. Step 5: Solve for x
   x = 21,319,686,659.39/68,870.25
6. Step 6: Final answer
   x = 309,563.08