Finding the Third Proportional to 31,612,525,158 and 68,734,820,658

Step by Step Solution

1. Step 1: Write the proportion equation
   31,612,525,158 : 68,734,820,658 = 68,734,820,658 : x
2. Step 2: Convert to fraction form
   31,612,525,158/68,734,820,658 = 68,734,820,658/x
3. Step 3: Cross multiply
   31,612,525,158x = 68,734,820,658 × 68,734,820,658
4. Step 4: Simplify right side
   31,612,525,158x = 4,724,475,570,887,423,164,416
5. Step 5: Solve for x
   x = 4,724,475,570,887,423,164,416/31,612,525,158
6. Step 6: Final answer
   x = 149,449,483,939.50