Finding the Third Proportional to 118,340,479,240 and 253,436,947,663

Step by Step Solution

1. Step 1: Write the proportion equation
   118,340,479,240 : 253,436,947,663 = 253,436,947,663 : x
2. Step 2: Convert to fraction form
   118,340,479,240/253,436,947,663 = 253,436,947,663/x
3. Step 3: Cross multiply
   118,340,479,240x = 253,436,947,663 × 253,436,947,663
4. Step 4: Simplify right side
   118,340,479,240x = 64,230,286,440,738,200,748,032
5. Step 5: Solve for x
   x = 64,230,286,440,738,200,748,032/118,340,479,240
6. Step 6: Final answer
   x = 542,758,376,958.03