Finding the Third Proportional to 63,429 and 85,438.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,429 : 85,438.50 = 85,438.50 : x
2. Step 2: Convert to fraction form
   63,429/85,438.50 = 85,438.50/x
3. Step 3: Cross multiply
   63,429x = 85,438.50 × 85,438.50
4. Step 4: Simplify right side
   63,429x = 7,299,737,282.25
5. Step 5: Solve for x
   x = 7,299,737,282.25/63,429
6. Step 6: Final answer
   x = 115,085.17