Finding the Third Proportional to 8,946,648,972 and 13,342,389,132

Step by Step Solution

1. Step 1: Write the proportion equation
   8,946,648,972 : 13,342,389,132 = 13,342,389,132 : x
2. Step 2: Convert to fraction form
   8,946,648,972/13,342,389,132 = 13,342,389,132/x
3. Step 3: Cross multiply
   8,946,648,972x = 13,342,389,132 × 13,342,389,132
4. Step 4: Simplify right side
   8,946,648,972x = 178,019,347,749,711,708,160
5. Step 5: Solve for x
   x = 178,019,347,749,711,708,160/8,946,648,972
6. Step 6: Final answer
   x = 19,897,880,011.48