Finding the Third Proportional to 64,993,654 and 142,739,942

Step by Step Solution

1. Step 1: Write the proportion equation
   64,993,654 : 142,739,942 = 142,739,942 : x
2. Step 2: Convert to fraction form
   64,993,654/142,739,942 = 142,739,942/x
3. Step 3: Cross multiply
   64,993,654x = 142,739,942 × 142,739,942
4. Step 4: Simplify right side
   64,993,654x = 20,374,691,042,163,364
5. Step 5: Solve for x
   x = 20,374,691,042,163,364/64,993,654
6. Step 6: Final answer
   x = 313,487,391.28