Finding the Third Proportional to 118,406,591,172 and 255,685,139,468

Step by Step Solution

1. Step 1: Write the proportion equation
   118,406,591,172 : 255,685,139,468 = 255,685,139,468 : x
2. Step 2: Convert to fraction form
   118,406,591,172/255,685,139,468 = 255,685,139,468/x
3. Step 3: Cross multiply
   118,406,591,172x = 255,685,139,468 × 255,685,139,468
4. Step 4: Simplify right side
   118,406,591,172x = 65,374,890,544,770,609,840,128
5. Step 5: Solve for x
   x = 65,374,890,544,770,609,840,128/118,406,591,172
6. Step 6: Final answer
   x = 552,122,055,855.87