Finding the Third Proportional to 33,312 and 72,090

Step by Step Solution

1. Step 1: Write the proportion equation
   33,312 : 72,090 = 72,090 : x
2. Step 2: Convert to fraction form
   33,312/72,090 = 72,090/x
3. Step 3: Cross multiply
   33,312x = 72,090 × 72,090
4. Step 4: Simplify right side
   33,312x = 5,196,968,100
5. Step 5: Solve for x
   x = 5,196,968,100/33,312
6. Step 6: Final answer
   x = 156,008.89