Finding the Third Proportional to 25,689,938.63 and 42,173,904.94

Step by Step Solution

1. Step 1: Write the proportion equation
   25,689,938.63 : 42,173,904.94 = 42,173,904.94 : x
2. Step 2: Convert to fraction form
   25,689,938.63/42,173,904.94 = 42,173,904.94/x
3. Step 3: Cross multiply
   25,689,938.63x = 42,173,904.94 × 42,173,904.94
4. Step 4: Simplify right side
   25,689,938.63x = 1,778,638,257,677,287
5. Step 5: Solve for x
   x = 1,778,638,257,677,287/25,689,938.63
6. Step 6: Final answer
   x = 69,234,819.27