Finding the Third Proportional to 138,402 and 302,654.25

Step by Step Solution

1. Step 1: Write the proportion equation
   138,402 : 302,654.25 = 302,654.25 : x
2. Step 2: Convert to fraction form
   138,402/302,654.25 = 302,654.25/x
3. Step 3: Cross multiply
   138,402x = 302,654.25 × 302,654.25
4. Step 4: Simplify right side
   138,402x = 91,599,595,043.06
5. Step 5: Solve for x
   x = 91,599,595,043.06/138,402
6. Step 6: Final answer
   x = 661,837.22