Finding the Third Proportional to 64,676,090,576 and 140,740,838,581

Step by Step Solution

1. Step 1: Write the proportion equation
   64,676,090,576 : 140,740,838,581 = 140,740,838,581 : x
2. Step 2: Convert to fraction form
   64,676,090,576/140,740,838,581 = 140,740,838,581/x
3. Step 3: Cross multiply
   64,676,090,576x = 140,740,838,581 × 140,740,838,581
4. Step 4: Simplify right side
   64,676,090,576x = 19,807,983,644,483,099,033,600
5. Step 5: Solve for x
   x = 19,807,983,644,483,099,033,600/64,676,090,576
6. Step 6: Final answer
   x = 306,264,393,349.61