Finding the Third Proportional to 56,788,390 and 123,526,690

Step by Step Solution

1. Step 1: Write the proportion equation
   56,788,390 : 123,526,690 = 123,526,690 : x
2. Step 2: Convert to fraction form
   56,788,390/123,526,690 = 123,526,690/x
3. Step 3: Cross multiply
   56,788,390x = 123,526,690 × 123,526,690
4. Step 4: Simplify right side
   56,788,390x = 15,258,843,142,356,100
5. Step 5: Solve for x
   x = 15,258,843,142,356,100/56,788,390
6. Step 6: Final answer
   x = 268,696,526.57