Finding the Third Proportional to 72,188 and 112,209

Step by Step Solution

1. Step 1: Write the proportion equation
   72,188 : 112,209 = 112,209 : x
2. Step 2: Convert to fraction form
   72,188/112,209 = 112,209/x
3. Step 3: Cross multiply
   72,188x = 112,209 × 112,209
4. Step 4: Simplify right side
   72,188x = 12,590,859,681
5. Step 5: Solve for x
   x = 12,590,859,681/72,188
6. Step 6: Final answer
   x = 174,417.63