Finding the Third Proportional to 139,748,212 and 293,953,208

Step by Step Solution

1. Step 1: Write the proportion equation
   139,748,212 : 293,953,208 = 293,953,208 : x
2. Step 2: Convert to fraction form
   139,748,212/293,953,208 = 293,953,208/x
3. Step 3: Cross multiply
   139,748,212x = 293,953,208 × 293,953,208
4. Step 4: Simplify right side
   139,748,212x = 86,408,488,493,491,264
5. Step 5: Solve for x
   x = 86,408,488,493,491,264/139,748,212
6. Step 6: Final answer
   x = 618,315,520.87