Finding the Third Proportional to 64,676,090,578 and 140,740,838,585

Step by Step Solution

1. Step 1: Write the proportion equation
   64,676,090,578 : 140,740,838,585 = 140,740,838,585 : x
2. Step 2: Convert to fraction form
   64,676,090,578/140,740,838,585 = 140,740,838,585/x
3. Step 3: Cross multiply
   64,676,090,578x = 140,740,838,585 × 140,740,838,585
4. Step 4: Simplify right side
   64,676,090,578x = 19,807,983,645,609,026,387,968
5. Step 5: Solve for x
   x = 19,807,983,645,609,026,387,968/64,676,090,578
6. Step 6: Final answer
   x = 306,264,393,357.55