Finding the Third Proportional to 69,345 and 99,090

Step by Step Solution

1. Step 1: Write the proportion equation
   69,345 : 99,090 = 99,090 : x
2. Step 2: Convert to fraction form
   69,345/99,090 = 99,090/x
3. Step 3: Cross multiply
   69,345x = 99,090 × 99,090
4. Step 4: Simplify right side
   69,345x = 9,818,828,100
5. Step 5: Solve for x
   x = 9,818,828,100/69,345
6. Step 6: Final answer
   x = 141,593.89