Finding the Third Proportional to 83,445 and 129,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,445 : 129,127.50 = 129,127.50 : x
2. Step 2: Convert to fraction form
   83,445/129,127.50 = 129,127.50/x
3. Step 3: Cross multiply
   83,445x = 129,127.50 × 129,127.50
4. Step 4: Simplify right side
   83,445x = 16,673,911,256.25
5. Step 5: Solve for x
   x = 16,673,911,256.25/83,445
6. Step 6: Final answer
   x = 199,819.18