Finding the Third Proportional to 85,538,448 and 123,588,312

Step by Step Solution

1. Step 1: Write the proportion equation
   85,538,448 : 123,588,312 = 123,588,312 : x
2. Step 2: Convert to fraction form
   85,538,448/123,588,312 = 123,588,312/x
3. Step 3: Cross multiply
   85,538,448x = 123,588,312 × 123,588,312
4. Step 4: Simplify right side
   85,538,448x = 15,274,070,863,009,344
5. Step 5: Solve for x
   x = 15,274,070,863,009,344/85,538,448
6. Step 6: Final answer
   x = 178,563,806.34