Finding the Third Proportional to 64,993,658 and 142,739,950

Step by Step Solution

1. Step 1: Write the proportion equation
   64,993,658 : 142,739,950 = 142,739,950 : x
2. Step 2: Convert to fraction form
   64,993,658/142,739,950 = 142,739,950/x
3. Step 3: Cross multiply
   64,993,658x = 142,739,950 × 142,739,950
4. Step 4: Simplify right side
   64,993,658x = 20,374,693,326,002,500
5. Step 5: Solve for x
   x = 20,374,693,326,002,500/64,993,658
6. Step 6: Final answer
   x = 313,487,407.13