Finding the Third Proportional to 57,789,615 and 84,611,146.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,789,615 : 84,611,146.50 = 84,611,146.50 : x
2. Step 2: Convert to fraction form
   57,789,615/84,611,146.50 = 84,611,146.50/x
3. Step 3: Cross multiply
   57,789,615x = 84,611,146.50 × 84,611,146.50
4. Step 4: Simplify right side
   57,789,615x = 7,159,046,112,044,462
5. Step 5: Solve for x
   x = 7,159,046,112,044,462/57,789,615
6. Step 6: Final answer
   x = 123,881,187.17