Finding the Third Proportional to 70,389.50 and 151,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,389.50 : 151,781.50 = 151,781.50 : x
2. Step 2: Convert to fraction form
   70,389.50/151,781.50 = 151,781.50/x
3. Step 3: Cross multiply
   70,389.50x = 151,781.50 × 151,781.50
4. Step 4: Simplify right side
   70,389.50x = 23,037,623,742.25
5. Step 5: Solve for x
   x = 23,037,623,742.25/70,389.50
6. Step 6: Final answer
   x = 327,287.79