Finding the Third Proportional to 84,009.75 and 133,090

Step by Step Solution

1. Step 1: Write the proportion equation
   84,009.75 : 133,090 = 133,090 : x
2. Step 2: Convert to fraction form
   84,009.75/133,090 = 133,090/x
3. Step 3: Cross multiply
   84,009.75x = 133,090 × 133,090
4. Step 4: Simplify right side
   84,009.75x = 17,712,948,100
5. Step 5: Solve for x
   x = 17,712,948,100/84,009.75
6. Step 6: Final answer
   x = 210,843.96