Finding the Third Proportional to 90,156 and 130,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,156 : 130,585.50 = 130,585.50 : x
2. Step 2: Convert to fraction form
   90,156/130,585.50 = 130,585.50/x
3. Step 3: Cross multiply
   90,156x = 130,585.50 × 130,585.50
4. Step 4: Simplify right side
   90,156x = 17,052,572,810.25
5. Step 5: Solve for x
   x = 17,052,572,810.25/90,156
6. Step 6: Final answer
   x = 189,145.18