Finding the Third Proportional to 55,370.75 and 85,903.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,370.75 : 85,903.50 = 85,903.50 : x
2. Step 2: Convert to fraction form
   55,370.75/85,903.50 = 85,903.50/x
3. Step 3: Cross multiply
   55,370.75x = 85,903.50 × 85,903.50
4. Step 4: Simplify right side
   55,370.75x = 7,379,411,312.25
5. Step 5: Solve for x
   x = 7,379,411,312.25/55,370.75
6. Step 6: Final answer
   x = 133,272.74