Finding the Third Proportional to 142,738 and 307,402

Step by Step Solution

1. Step 1: Write the proportion equation
   142,738 : 307,402 = 307,402 : x
2. Step 2: Convert to fraction form
   142,738/307,402 = 307,402/x
3. Step 3: Cross multiply
   142,738x = 307,402 × 307,402
4. Step 4: Simplify right side
   142,738x = 94,495,989,604
5. Step 5: Solve for x
   x = 94,495,989,604/142,738
6. Step 6: Final answer
   x = 662,024.06