Finding the Third Proportional to 85,538,450 and 123,588,315

Step by Step Solution

1. Step 1: Write the proportion equation
   85,538,450 : 123,588,315 = 123,588,315 : x
2. Step 2: Convert to fraction form
   85,538,450/123,588,315 = 123,588,315/x
3. Step 3: Cross multiply
   85,538,450x = 123,588,315 × 123,588,315
4. Step 4: Simplify right side
   85,538,450x = 15,274,071,604,539,224
5. Step 5: Solve for x
   x = 15,274,071,604,539,224/85,538,450
6. Step 6: Final answer
   x = 178,563,810.83