Finding the Third Proportional to 43,210 and 58,070

Step by Step Solution

1. Step 1: Write the proportion equation
   43,210 : 58,070 = 58,070 : x
2. Step 2: Convert to fraction form
   43,210/58,070 = 58,070/x
3. Step 3: Cross multiply
   43,210x = 58,070 × 58,070
4. Step 4: Simplify right side
   43,210x = 3,372,124,900
5. Step 5: Solve for x
   x = 3,372,124,900/43,210
6. Step 6: Final answer
   x = 78,040.38