Finding the Third Proportional to 56,788,621.50 and 123,527,139

Step by Step Solution

1. Step 1: Write the proportion equation
   56,788,621.50 : 123,527,139 = 123,527,139 : x
2. Step 2: Convert to fraction form
   56,788,621.50/123,527,139 = 123,527,139/x
3. Step 3: Cross multiply
   56,788,621.50x = 123,527,139 × 123,527,139
4. Step 4: Simplify right side
   56,788,621.50x = 15,258,954,069,525,320
5. Step 5: Solve for x
   x = 15,258,954,069,525,320/56,788,621.50
6. Step 6: Final answer
   x = 268,697,384.55