Finding the Third Proportional to 86,572 and 130,429

Step by Step Solution

1. Step 1: Write the proportion equation
   86,572 : 130,429 = 130,429 : x
2. Step 2: Convert to fraction form
   86,572/130,429 = 130,429/x
3. Step 3: Cross multiply
   86,572x = 130,429 × 130,429
4. Step 4: Simplify right side
   86,572x = 17,011,724,041
5. Step 5: Solve for x
   x = 17,011,724,041/86,572
6. Step 6: Final answer
   x = 196,503.77