Finding the Third Proportional to 85,215 and 133,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,215 : 133,384.50 = 133,384.50 : x
2. Step 2: Convert to fraction form
   85,215/133,384.50 = 133,384.50/x
3. Step 3: Cross multiply
   85,215x = 133,384.50 × 133,384.50
4. Step 4: Simplify right side
   85,215x = 17,791,424,840.25
5. Step 5: Solve for x
   x = 17,791,424,840.25/85,215
6. Step 6: Final answer
   x = 208,782.78