Finding the Third Proportional to 70,899 and 168,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,899 : 168,607.50 = 168,607.50 : x
2. Step 2: Convert to fraction form
   70,899/168,607.50 = 168,607.50/x
3. Step 3: Cross multiply
   70,899x = 168,607.50 × 168,607.50
4. Step 4: Simplify right side
   70,899x = 28,428,489,056.25
5. Step 5: Solve for x
   x = 28,428,489,056.25/70,899
6. Step 6: Final answer
   x = 400,971.65