Finding the Third Proportional to 118,209 and 181,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,209 : 181,687.50 = 181,687.50 : x
2. Step 2: Convert to fraction form
   118,209/181,687.50 = 181,687.50/x
3. Step 3: Cross multiply
   118,209x = 181,687.50 × 181,687.50
4. Step 4: Simplify right side
   118,209x = 33,010,347,656.25
5. Step 5: Solve for x
   x = 33,010,347,656.25/118,209
6. Step 6: Final answer
   x = 279,254.10