Finding the Third Proportional to 55,611 and 83,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,611 : 83,911.50 = 83,911.50 : x
2. Step 2: Convert to fraction form
   55,611/83,911.50 = 83,911.50/x
3. Step 3: Cross multiply
   55,611x = 83,911.50 × 83,911.50
4. Step 4: Simplify right side
   55,611x = 7,041,139,832.25
5. Step 5: Solve for x
   x = 7,041,139,832.25/55,611
6. Step 6: Final answer
   x = 126,614.16