Finding the Third Proportional to 69,118.31 and 145,192.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,118.31 : 145,192.50 = 145,192.50 : x
2. Step 2: Convert to fraction form
   69,118.31/145,192.50 = 145,192.50/x
3. Step 3: Cross multiply
   69,118.31x = 145,192.50 × 145,192.50
4. Step 4: Simplify right side
   69,118.31x = 21,080,862,056.25
5. Step 5: Solve for x
   x = 21,080,862,056.25/69,118.31
6. Step 6: Final answer
   x = 304,996.77