Finding the Third Proportional to 87,513 and 191,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,513 : 191,971.50 = 191,971.50 : x
2. Step 2: Convert to fraction form
   87,513/191,971.50 = 191,971.50/x
3. Step 3: Cross multiply
   87,513x = 191,971.50 × 191,971.50
4. Step 4: Simplify right side
   87,513x = 36,853,056,812.25
5. Step 5: Solve for x
   x = 36,853,056,812.25/87,513
6. Step 6: Final answer
   x = 421,115.23