Finding the Third Proportional to 54,156 and 83,692.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,156 : 83,692.50 = 83,692.50 : x
2. Step 2: Convert to fraction form
   54,156/83,692.50 = 83,692.50/x
3. Step 3: Cross multiply
   54,156x = 83,692.50 × 83,692.50
4. Step 4: Simplify right side
   54,156x = 7,004,434,556.25
5. Step 5: Solve for x
   x = 7,004,434,556.25/54,156
6. Step 6: Final answer
   x = 129,338.11