Finding the Third Proportional to 56,294 and 89,139

Step by Step Solution

1. Step 1: Write the proportion equation
   56,294 : 89,139 = 89,139 : x
2. Step 2: Convert to fraction form
   56,294/89,139 = 89,139/x
3. Step 3: Cross multiply
   56,294x = 89,139 × 89,139
4. Step 4: Simplify right side
   56,294x = 7,945,761,321
5. Step 5: Solve for x
   x = 7,945,761,321/56,294
6. Step 6: Final answer
   x = 141,147.57