Finding the Third Proportional to 89,971,820,298 and 187,390,555,245

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,820,298 : 187,390,555,245 = 187,390,555,245 : x
2. Step 2: Convert to fraction form
   89,971,820,298/187,390,555,245 = 187,390,555,245/x
3. Step 3: Cross multiply
   89,971,820,298x = 187,390,555,245 × 187,390,555,245
4. Step 4: Simplify right side
   89,971,820,298x = 35,115,220,195,029,395,963,904
5. Step 5: Solve for x
   x = 35,115,220,195,029,395,963,904/89,971,820,298
6. Step 6: Final answer
   x = 390,291,316,533.58