Finding the Third Proportional to 83,308 and 129,030

Step by Step Solution

1. Step 1: Write the proportion equation
   83,308 : 129,030 = 129,030 : x
2. Step 2: Convert to fraction form
   83,308/129,030 = 129,030/x
3. Step 3: Cross multiply
   83,308x = 129,030 × 129,030
4. Step 4: Simplify right side
   83,308x = 16,648,740,900
5. Step 5: Solve for x
   x = 16,648,740,900/83,308
6. Step 6: Final answer
   x = 199,845.64